Mult proto + new app

android/AndroidManifest.xml

@@ -1,12 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.dragontcp.client"
-    android:versionCode="13"
-    android:versionName="13.0-hybrid">
+    android:versionCode="14"
+    android:versionName="14.0-hybrid">
+
+    <!-- minSdk 24 covers Android 7.0 and later. It was 29, which silently made
+         the APK uninstallable on every device older than Android 10. -->
+    <uses-sdk android:minSdkVersion="24" android:targetSdkVersion="36" />
 
-    <uses-sdk android:minSdkVersion="29" android:targetSdkVersion="29" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <!-- Required from API 34 for a foreground service of type specialUse. -->
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
+    <!-- Required from API 33 for the ongoing VPN notification to be visible. -->
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
+    <!-- 64-bit ARM is the primary target; the other ABIs are shipped so 32-bit
+         and emulator devices can install too. -->
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
 
     <application
         android:allowBackup="false"
@@ -36,10 +47,14 @@
         <service
             android:name=".DragonService"
             android:exported="true"
+            android:foregroundServiceType="specialUse"
             android:permission="android.permission.BIND_VPN_SERVICE">
             <intent-filter>
                 <action android:name="android.net.VpnService" />
             </intent-filter>
+            <property
+                android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
+                android:value="VPN tunnel transport kept alive while the device is connected" />
         </service>
     </application>
 </manifest>